A forensic psychologist working for the FBI moves to Shipwreck Island and renews her relationship with her sisters, aunt, best friend, and old flame. While on the island she is introduced to Ezra Reinhold, a reclusive billionaire who enjoys poking around in cold cases and has the means to hire the best people to find the answers no one else has been able to.

In book 9 in the series, Sydney goes with Emily to visit Beverly in the rehabilitation hospital she has been moved to. While they are there Syd meets a woman suffering from a brain disorder following an injury to the head. The woman is able to speak but what she says seems like nothing but gibberish. While her speech pattern is completely disporganized, she seems alert, so Syd sits with her in the garden while Emily is meeting with Beverly's doctor and politely listens to what she says. The longer Syd sits there the more certain she is that there are patterns contained within the babbling. She begins to ask the woman questions and while the answers are as disorganized as anything the woman has said to that point, Syd begins to suspect that the woman may actually have been a witness to a murder her FBI team had investigated but had been unable to solve.